t/t4018-diff-funcname.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2007 Johannes E. Schindelin
   4 #
   5
   6 test_description='Test custom diff function name patterns'
   7
   8 . ./test-lib.sh
   9
  10 LF='
  11 '
  12 cat >Beer.java <<\EOF
  13 public class Beer
  14 {
  15         int special;
  16         public static void main(String args[])
  17         {
  18                 String s=" ";
  19                 for(int x = 99; x > 0; x--)
  20                 {
  21                         System.out.print(x + " bottles of beer on the wall "
  22                                 + x + " bottles of beer\n"
  23                                 + "Take one down, pass it around, " + (x - 1)
  24                                 + " bottles of beer on the wall.\n");
  25                 }
  26                 System.out.print("Go to the store, buy some more,\n"
  27                         + "99 bottles of beer on the wall.\n");
  28         }
  29 }
  30 EOF
  31 sed 's/beer\\/beer,\\/' <Beer.java >Beer-correct.java
  32 cat >Beer.perl <<\EOT
  33 package Beer;
  34
  35 use strict;
  36 use warnings;
  37 use parent qw(Exporter);
  38 our @EXPORT_OK = qw(round finalround);
  39
  40 sub other; # forward declaration
  41
  42 # hello
  43
  44 sub round {
  45         my ($n) = @_;
  46         print "$n bottles of beer on the wall ";
  47         print "$n bottles of beer\n";
  48         print "Take one down, pass it around, ";
  49         $n = $n - 1;
  50         print "$n bottles of beer on the wall.\n";
  51 }
  52
  53 sub finalround
  54 {
  55         print "Go to the store, buy some more\n";
  56         print "99 bottles of beer on the wall.\n");
  57 }
  58
  59 sub withheredocument {
  60         print <<"EOF"
  61 decoy here-doc
  62 EOF
  63         # some lines of context
  64         # to pad it out
  65         print "hello\n";
  66 }
  67
  68 __END__
  69
  70 =head1 NAME
  71
  72 Beer - subroutine to output fragment of a drinking song
  73
  74 =head1 SYNOPSIS
  75
  76         use Beer qw(round finalround);
  77
  78         sub song {
  79                 for (my $i = 99; $i > 0; $i--) {
  80                         round $i;
  81                 }
  82                 finalround;
  83         }
  84
  85         song;
  86
  87 =cut
  88 EOT
  89 sed -e '
  90         s/hello/goodbye/
  91         s/beer\\/beer,\\/
  92         s/more\\/more,\\/
  93         s/song;/song();/
  94 ' <Beer.perl >Beer-correct.perl
  95
  96 test_config () {
  97         git config "$1" "$2" &&
  98         test_when_finished "git config --unset $1"
  99 }
 100
 101 test_expect_funcname () {
 102         lang=${2-java}
 103         test_expect_code 1 git diff --no-index -U1 \
 104                 "Beer.$lang" "Beer-correct.$lang" >diff &&
 105         grep "^@@.*@@ $1" diff
 106 }
 107
 108 for p in bibtex cpp csharp fortran html java matlab objc pascal perl php python ruby tex
 109 do
 110         test_expect_success "builtin $p pattern compiles" '
 111                 echo "*.java diff=$p" >.gitattributes &&
 112                 test_expect_code 1 git diff --no-index \
 113                         Beer.java Beer-correct.java 2>msg &&
 114                 ! grep fatal msg &&
 115                 ! grep error msg
 116         '
 117         test_expect_success "builtin $p wordRegex pattern compiles" '
 118                 echo "*.java diff=$p" >.gitattributes &&
 119                 test_expect_code 1 git diff --no-index --word-diff \
 120                         Beer.java Beer-correct.java 2>msg &&
 121                 ! grep fatal msg &&
 122                 ! grep error msg
 123         '
 124 done
 125
 126 test_expect_success 'default behaviour' '
 127         rm -f .gitattributes &&
 128         test_expect_funcname "public class Beer\$"
 129 '
 130
 131 test_expect_success 'set up .gitattributes declaring drivers to test' '
 132         cat >.gitattributes <<-\EOF
 133         *.java diff=java
 134         *.perl diff=perl
 135         EOF
 136 '
 137
 138 test_expect_success 'preset java pattern' '
 139         test_expect_funcname "public static void main("
 140 '
 141
 142 test_expect_success 'preset perl pattern' '
 143         test_expect_funcname "sub round {\$" perl
 144 '
 145
 146 test_expect_success 'perl pattern accepts K&R style brace placement, too' '
 147         test_expect_funcname "sub finalround\$" perl
 148 '
 149
 150 test_expect_success 'but is not distracted by end of <<here document' '
 151         test_expect_funcname "sub withheredocument {\$" perl
 152 '
 153
 154 test_expect_success 'perl pattern is not distracted by sub within POD' '
 155         test_expect_funcname "=head" perl
 156 '
 157
 158 test_expect_success 'perl pattern gets full line of POD header' '
 159         test_expect_funcname "=head1 SYNOPSIS\$" perl
 160 '
 161
 162 test_expect_success 'perl pattern is not distracted by forward declaration' '
 163         test_expect_funcname "package Beer;\$" perl
 164 '
 165
 166 test_expect_success 'custom pattern' '
 167         test_config diff.java.funcname "!static
 168 !String
 169 [^      ].*s.*" &&
 170         test_expect_funcname "int special;\$"
 171 '
 172
 173 test_expect_success 'last regexp must not be negated' '
 174         test_config diff.java.funcname "!static" &&
 175         test_expect_code 128 git diff --no-index Beer.java Beer-correct.java 2>msg &&
 176         grep ": Last expression must not be negated:" msg
 177 '
 178
 179 test_expect_success 'pattern which matches to end of line' '
 180         test_config diff.java.funcname "Beer\$" &&
 181         test_expect_funcname "Beer\$"
 182 '
 183
 184 test_expect_success 'alternation in pattern' '
 185         test_config diff.java.funcname "Beer$" &&
 186         test_config diff.java.xfuncname "^[     ]*((public|static).*)$" &&
 187         test_expect_funcname "public static void main("
 188 '
 189
 190 test_done